Earthquake:An earthquake is the shaking and trembling that results from the movement of rock beneath earth's surface. stress:a force that acts on rock to change it's shape or volume. Shearing: Stress that pushes a mass of rock in two opposite directions is called shearing. tension:tension pulls on the crust stretching rock so that it becomes thinner in then middle. compresion: squeses rock until it folds and breaks. deformation:most changes in the crust occur so slow the cannot be directly observed. fault: a fault is a gash in earths crust where bunches of rock that slide past each other. strike -slip fault: the rock on the either side of the fault slip by each other moving side-ways or up and down. normal fault: the fault is on an angle so that one piece of rock lies above the fault and the other is below the fault. Reverse fault: a reverse fault has the same structure as a normal fault but the chunks move in opposite directions. Hanging wall: a hanging wall is the part of the fault that lies on the top. Foot wall: the part of the fault that lies on the bottom. fault-block mountain: when a normal fault up lifts a block of rock. Folds: parts of rock that are formed by compresion. Anticline: a fold in a rock that is bent upward. Syncline: a folded rock that is bent downward. Plateau: a big piece of flat land that is elevated above sea level.
Outline
Stress in the crust:
earthquake
Types of stress
shearing
tension compresion
deformation
Kinds of faults
NOTES 2.1 earths crust in motion
Vocabulary
Earthquake:An earthquake is the shaking and trembling that results from the movement of rock beneath earth's surface.stress:a force that acts on rock to change it's shape or volume.
Shearing: Stress that pushes a mass of rock in two opposite directions is called shearing.
tension:tension pulls on the crust stretching rock so that it becomes thinner in then middle.
compresion: squeses rock until it folds and breaks.
deformation:most changes in the crust occur so slow the cannot be directly observed.
fault: a fault is a gash in earths crust where bunches of rock that slide past each other.
strike -slip fault: the rock on the either side of the fault slip by each other moving side-ways or up and down.
normal fault: the fault is on an angle so that one piece of rock lies above the fault and the other is below the fault.
Reverse fault: a reverse fault has the same structure as a normal fault but the chunks move in opposite directions.
Hanging wall: a hanging wall is the part of the fault that lies on the top.
Foot wall: the part of the fault that lies on the bottom.
fault-block mountain: when a normal fault up lifts a block of rock.
Folds: parts of rock that are formed by compresion.
Anticline: a fold in a rock that is bent upward.
Syncline: a folded rock that is bent downward.
Plateau: a big piece of flat land that is elevated above sea level.
Outline
Stress in the crust:
earthquake
Types of stress
shearing
tension compresion
deformation
Kinds of faults